Because if they hired for instance 30 000 people the last two years, 11 000 brings them back a year or so. If however 11 000 is the headcount they've grown the last 10 years, it's a much more dramatic sign.
If your friend told you they lost $10,000 in the stock market today, would you feel bad for them? What if they then told you that they're up $500,000 over the past year? How about then?